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Sodium metabisulfite


【Alias】: Sodium pyrosulfite; disodium disulphite; Sodium metabisulphite; Sodium disulphite; Sodium pyrosulphite; SODIUM DISULFITE; disodium oxidosulfanesulfonate oxide; Sodium Metabi; Metabisulfite Sodium
【English name】: Sodium Pyrosulfite Sodium Metabisulfite
【Molecular formula】: Na2S2O5
【Molecular weight】: 190.10

【Standard】GB1893-86

item
index
Sodium metabisulfite %
≥65
ferrum
≤0.005
PH
4—4.6
heavy metal in Pb %
≤0.002
aresenic(As)%
≤0.0002
appearance white or light yellow crystal powder

【Uses】:
In medical industry, for manufacturing of chloroform, sulfetrone and benzaldehyde; in rubber industry as coagulator; in dyeing industry, as antichlor and scouring assistant; in leather industry, as treating and tanning agent; in chemical industry for manufacturing of hydroxycitronellal, hydroxylamine hydrochloride; as developing agent in photographic industry; as bleaching agent, preservative, anti-oxidant, and etc.

【Physical and chemical properties】:
White or light yellow crystal powder, relative density: 1.4; soluble in water, glycerol and ethyl alcohol

 
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